Restart current scene in Unity 5.0 using new SceneManager

SceneRestart.cs

/*
For more details, please follow the link below:
https://docs.unity3d.com/ScriptReference/SceneManagement.SceneManager.html
*/
using UnityEngine;
using UnityEngine.SceneManagement;
using System.Collections;

public class SceneRestart : MonoBehaviour {
	
	void Update () {
        if (Input.GetKeyDown(KeyCode.R))
            SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);
	}
}